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Finding the Fourth Proportional to 18,360.40, 27,525.12 and 7,964.32

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Solution

The fourth proportional to 18,360.40, 27,525.12 and 7,964.32 is: 11,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.40 : 27,525.12 = 7,964.32 : x
  2. Step 2: Convert to fraction form
    18,360.40/27,525.12 = 7,964.32/x
  3. Step 3: Cross multiply
    18,360.40x = 27,525.12 × 7,964.32
  4. Step 4: Simplify right side
    18,360.40x = 219,218,863.72
  5. Step 5: Solve for x
    x = 219,218,863.72/18,360.40
  6. Step 6: Final answer
    x = 11,939.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.